MIAMI - Prosecutors in Miami Tuesday called on a CIA operative to testify he received documents in Afghanistan linking terror suspect Jose Padilla to extremists.

Referring to himself by the pseudonym "Tom Langston," the CIA agent recounted how he received numerous cartons of documents, photos and other material from an Afghan man in the southern Afghan city of Kandahar in December 2001.

"Langston," disguised by what appeared to be a fake beard, said the Afghan informant who provided the agency with 22 containers of evidence was a member of an Afghan tribe that opposed the former Taliban regime.

Among the items he allegedly received was a bright blue binder -- which the prosecution introduced as evidence -- that reportedly contains numerous dossiers written in Arabic about terror suspects, including Padilla.

The prosecution is attempting to link Padilla to extremist groups in Afghanistan, most notably al-Qaida, in an effort to convict the 36-year-old and two co-defendants, Adham Amin Hassoun, 45, and Kifah Wael Jayyousi, 44, on charges they conspired to aid terror groups worldwide and provide them with monetary and material support over the last decade.